It should say something like:
To reduce 64 megabytes from the original size of the logical volume, use the following command:

Reported by: sigulete

https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/9/html/configuring_and_managing_logical_volumes/modifying-the-size-of-a-logical-volume_configuring-and-managing-logical-volumes#annotations:bc1d8bd5-2005-4119-9fd9-71aed05c2529